prepare release of 0.17b4
prepare release of 0.17b4

slonik-az/cython,madjar/cython,mrGeen/cython,hhsprings/cython,fabianrost84/cython,roxyboy/cython,JelleZijlstra/cython,fperez/cython,achernet/cython,da-woods/cython,achernet/cython,hickford/cython,mrGeen/cython,madjar/cython,scoder/cython,ABcDexter/cython,acrispin/cython,marscher/cython,encukou/cython,cython/cython,scoder/cython,mcanthony/cython,marscher/cython,fperez/cython,larsmans/cython,ChristopherHogan/cython,cython/cython,hickford/cython,hhsprings/cython,mcanthony/cython,mcanthony/cython,JelleZijlstra/cython,madjar/cython,slonik-az/cython,hhsprings/cython,mrGeen/cython,fabianrost84/cython,ABcDexter/cython,hickford/cython,mcanthony/cython,acrispin/cython,c-blake/cython,roxyboy/cython,dahebolangkuan/cython,hickford/cython,hhsprings/cython,andreasvc/cython,JelleZijlstra/cython,da-woods/cython,cython/cython,acrispin/cython,fperez/cython,JelleZijlstra/cython,mrGeen/cython,mcanthony/cython,dahebolangkuan/cython,encukou/cython,da-woods/cython,hickford/cython,ABcDexter/cython,scoder/cython,acrispin/cython,larsmans/cython,andreasvc/cython,slonik-az/cython,c-blake/cython,hhsprings/cython,dahebolangkuan/cython,fabianrost84/cython,slonik-az/cython,fperez/cython,madjar/cython,dahebolangkuan/cython,fperez/cython,scoder/cython,achernet/cython,encukou/cython,achernet/cython,larsmans/cython,marscher/cython,marscher/cython,roxyboy/cython,c-blake/cython,slonik-az/cython,larsmans/cython,marscher/cython,da-woods/cython,roxyboy/cython,c-blake/cython,c-blake/cython,fabianrost84/cython,cython/cython,madjar/cython,andreasvc/cython,dahebolangkuan/cython,ChristopherHogan/cython,ChristopherHogan/cython,andreasvc/cython,achernet/cython,mrGeen/cython,encukou/cython,ABcDexter/cython,fabianrost84/cython,ABcDexter/cython,roxyboy/cython,larsmans/cython,encukou/cython,andreasvc/cython,JelleZijlstra/cython,acrispin/cython